Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
If our community has helped you, please consider making a contribution to support this website. Thanks!

P/S - primary pump control

Options
BigJoe_2
BigJoe_2 Member Posts: 7
in THE MAIN WALL
Do the fine gents on the wall usually wire the primary pump to be constant circulation? How else can it be done. I have 2 zone system with an indirect, through a Taco 503 w/ priority. Thanks

Comments

  • Joe Mattiello
    Joe Mattiello Member Posts: 750
    SR503 wiring for system pump

    Hi there you can use the SR503 to energize a system pump, but you will have to give up the end switch to do it. Simply add a jumper from the h terminal to X1 terminal, and bring one leg of the system pump to ZR terminal. Alternatively, you can use the SR503-EXP, or the SR504 which have ZC/ZR terminals. Add the system pump to ZR terminal, and save the XX terminals for a low voltage signal to TT terminals on the boiler.


    Taco, Inc.
    Joe Mattiello
    Technical Service Technician
    joemat@taco-hvac.com
    401-942-8000 X 484
    www.taco-hvac.com
    Joe Mattiello
    N. E. Regional Manger, Commercial Products
    Taco Comfort Solutions
This discussion has been closed.

Categories